Dr Oppenhuizen - Dr. Oppenhuizen is a Diplomate of The American Board of Orthodontics. He is also a Fellow of the American College of Dentists and the Pierre Fauchard Academy. Diplomate status is achieved by rigorous testing and it is the standard of achievement in the specialty afforded to less than a third of all orthodontists. To be invited into the other honor societies is a distinction awarded to less than 3% of all dentists in the United States.